References of "Scientific journals"
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See detailSuspending is Believing
Raleigh, Thomas UL

in Synthese (2021), 198

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See detailPrecoding for Satellite Communications: Why, How and What next?
Mysore Rama Rao, Bhavani Shankar UL; Lagunas, Eva UL; Chatzinotas, Symeon UL et al

in IEEE Communications Letters (2021)

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See detailAnimal Faces: the Question of the Gaze
Roelens, Nathalie UL

in Lexia (2021)

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See detailOn the construct validity of interoceptive accuracy based on heartbeat counting: cardiovascular determinants of absolute and tilt-induced change scores
Schulz, André UL; Back, Sarah N.; Schaan, Violetta K. et al

in Biological Psychology (2021), 164(1), 108168

Interoceptive accuracy (IAcc) as assessed with the heartbeat counting task (IAccHBCT) may be affected by a range of factors including (1.) the ability to adequately detect cardiac signals, indicated by ... [more ▼]

Interoceptive accuracy (IAcc) as assessed with the heartbeat counting task (IAccHBCT) may be affected by a range of factors including (1.) the ability to adequately detect cardiac signals, indicated by IAcc in a heartbeat discrimination task (IAccHBDT), (2.) cardiac signal properties, affected by sympathetic and parasympathetic tone, and (3.) non-interoceptive processes, including time estimation accuracy (TEAcc). In the current study we investigated the contribution of these factors to absolute and Δ IAccHBCT scores, induced by passive head-up and head-down tilt in 49 healthy individuals. A set of hierarchical regression models showed IAccHBDT scores as the strongest and, across different orthostatic (tilt) conditions, most stable (positive) predictor of absolute and Δ IAccHBCT scores. Neither indicators of cardiac signal properties (except for HR in head-down-tilt), nor TEAcc predicted absolute or Δ IAccHBCT scores. These findings support the convergent and discriminant validity of absolute and Δ IAccHBCT scores. [less ▲]

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See detailArticle 47 of the Charter in the Opinion procedure
Neframi, Eleftheria UL

in European Papers (2021)

This paper affirms that external relations are outside the scope of Article 47 of the Charter. This does not however mean that the principle of judicial protection and the right of access to an ... [more ▼]

This paper affirms that external relations are outside the scope of Article 47 of the Charter. This does not however mean that the principle of judicial protection and the right of access to an independent tribunal have only an internal EU law dimension. In Opinion 1/17, The Court of Justice could assess the CETA’s compatibility with the right of access to an independent tribunal without having recourse to Article 47 of the Charter, on the ground either of the principle of autonomy or of the compatibility with the substantive provisions of the common commercial policy. This paper argues that while judicial protection as part of the autonomy claim could meet some conceptual limits, promoting judicial protection as part of the common commercial policy could reinforce the perception that the Union is a credible and influential actor in international trade and in international procedural law. [less ▲]

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See detailThe mainstreaming of EU affairs: a challenge for parliamentary administrations
Högenauer, Anna-Lena UL

in Journal of Legislative Studies (2021)

Past research has identified a trend towards the bureaucratisation of the parliamentary scrutiny of EU affairs. It highlighted the role of parliamentary staff in selecting relevant issues, advising on ... [more ▼]

Past research has identified a trend towards the bureaucratisation of the parliamentary scrutiny of EU affairs. It highlighted the role of parliamentary staff in selecting relevant issues, advising on subsidiarity and procedures and drafting of opinions and resolutions. However, while administrators clearly play a role, less is known about the Europeanisation of parliamentary administrations. In particular, the impact of the growing Europeanisation of sectoral committees on the Europeanisation of staff is unexplored. This article presents data from a survey of parliamentary administrations in 2021, which shows that the Europeanisation of parliamentary administrations extends beyond the main units in charge of EU affairs and affects sectoral committee staff more generally. At the same time, it reveals that the organisation of staff support for EU affairs varies greatly across the national parliaments depending on the organisation of the political scrutiny, on administrative capacity and on pre-existing units. [less ▲]

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See detailLa pratique luxembourgeoise en matière de droit international public 2019
Kinsch, Patrick UL; Friden, Georges

in Annales de droit luxembourgeois (2021), 30

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See detailKulturen des Reparierens und die Lebensdauer der Dinge (Teil 1)
Krebs, Stefan UL; Schabacher, Gabriele; Weber, Heike

in TU: Zeitschrift für Technik im Unterricht (2021), 46(2), 5-13

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See detailIllusory gender-equality paradox, math self-concept, and frame-of-reference effects: New integrative explanations for multiple paradoxes
Marsh, Herbert W.; Parker, Philip D.; Guo, Jiesi et al

in Journal of Personality and Social Psychology (2021)

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See detailPromoting physical activity for mental health in a refugee camp: the Skaramagas project
Adamakis, Emmanouil UL

in British Journal of Sports Medicine (2021)

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See detailPrecoding with Received-Interference Power Control for Multibeam Satellite Communication Systems
Lagunas, Eva UL; Perez-Neira, Ana Isabel; Martinez, Marc et al

in Frontiers in Space Technologies (2021)

Zero-Forcing (ZF) and Regularized Zero-Forcing (RZF) precoding are low-complexity sub-optimal solutions widely accepted in the satellite communications community to mitigate the resulting co-channel ... [more ▼]

Zero-Forcing (ZF) and Regularized Zero-Forcing (RZF) precoding are low-complexity sub-optimal solutions widely accepted in the satellite communications community to mitigate the resulting co-channel interference caused by aggressive frequency reuse. However, both are sensitive to the conditioning of the channel matrix, which can greatly reduce the achievable gains. This paper brings the attention to the benefits of a design that allows some residual received interference power at the co-channel users. The motivation behind this approach is to relax the dependence on the matrix inversion procedure involved in conventional precoding schemes. In particular, the proposed scheme aims to be less sensitive to the user scheduling, which is one of the key limiting factors for the practical implementation of precoding. Furthermore, the proposed technique can also cope with more users than satellite beams. In fact, the proposed precoder can be tuned to control the interference towards the co-channel beams, which is a desirable feature that is not met by the existing RZF solutions. The design is formulated as a non-convex optimization and we study various algorithms in order to obtain a practical solution. Supporting results based on numerical simulations show that the proposed precoding implementations are able to outperform the conventional ZF and RZF schemes. [less ▲]

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See detailDevelopment and Validation of the Revised Multicultural Ideology Scale in Germany and Luxembourg
Stogianni, Maria UL; Berry, John; Grigoryev, Dmitry et al

in Psychological Reports (2021)

A revised version of the Multicultural Ideology Scale (rMCI; Berry 2020; Berry et al., 1977) is currently being developed to measure endorsement of multiculturalism in different cultural contexts. The ... [more ▼]

A revised version of the Multicultural Ideology Scale (rMCI; Berry 2020; Berry et al., 1977) is currently being developed to measure endorsement of multiculturalism in different cultural contexts. The current study, which is part of this cross-cultural research project, presents the first assessment of the rMCI scale in the German language. The measure aims to cover several attitudinal dimensions of multiculturalism, relevant to the integration of different ethnocultural groups: Cultural Maintenance, Equity/Inclusion, Social interaction, Essentialistic Boundaries, Extent of Differences, and Consequences of Diversity. Two independent datasets were acquired from Germany (N = 382) and Luxembourg (N = 148) to estimate the factor structure of the rMCI using different confirmatory factor analysis techniques. The findings suggest that a 4-factor solution, including Cultural Maintenance, Equity/Inclusion, Social interaction, and Consequences of Diversity, was the best fit for the data. Most of these subscales demonstrated adequate psychometric properties (internal consistency, convergent, and discriminant validity). The 4-factor model of the rMCI was partially invariant across the two ethnic groups and full measurement invariance was established across gender. [less ▲]

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See detailUnerhört anders oder »wenn nur der Geist neu ist«. Interkulturalität und Novelle
Heimböckel, Dieter UL

in Zeitschrift für Interkulturelle Germanistik (2021), 12(1), 23-40

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See detailSubpulse Processing for Unambiguous Doppler Estimation in Pulse-Doppler Noise Radars
Tedgue Beltrao, Gabriel UL; Alaeekerahroodi, Mohammad UL; Mysore Rama Rao, Bhavani Shankar UL et al

in IEEE Transactions on Aerospace and Electronic Systems (2021)

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See detailDetection & Identification of On-Orbit Objects Using Machine Learning
Perez, Marcos; Mohamed Ali, Mohamed Adel UL; Garcia Sanchez, Albert UL et al

in European Conference on Space Debris (2021), 8(1),

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See detailLiving and Learning in Times of Corona
Badder, Anastasia UL; Zhang, Yimin UL; Olmo, Mara et al

in The Ends of Humanities (2021)

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See detailCoverage Probability of Double-IRS Assisted Communication Systems
Papazafeiropoulos, Anastasios; Kourtessis, Pandelis; Chatzinotas, Symeon UL et al

in IEEE Wireless Communications Letters (2021), 10(8), 1722-1726

In this paper, we derive the coverage probability of a double-intelligent reflecting surface (IRS) assisted wireless network and study the impact of multiplicative beamforming gain and correlated Rayleigh ... [more ▼]

In this paper, we derive the coverage probability of a double-intelligent reflecting surface (IRS) assisted wireless network and study the impact of multiplicative beamforming gain and correlated Rayleigh fading. In particular, we derive a novel closed-form expression of the coverage probability of a single-input single-output (SISO) system assisted by two large IRSs while being dependent on the corresponding arbitrary reflecting beamforming matrices (RBMs) and large-scale statistics in terms of correlation matrices. Taking advantage of th large-scale statistics, we achieve to perform optimization of the RBM of both IRSs at every several coherence intervals rather at each interval. This property, based on statistical channel state information (CSI), is of paramount importance in multi-IRS assisted networks, which are accompanied with increased computational complexity during their RBM optimization. Numerical results validate the tightness of the analytical results even for small IRSs and reveal insightful properties. [less ▲]

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See detailUAV-UGV-UMV Multi-Swarms for Cooperative Surveillance
Stolfi Rosso, Daniel UL; Brust, Matthias R. UL; Danoy, Grégoire UL et al

in Frontiers in Robotics and AI (2021), 8

In this paper we present a surveillance system for early detection of escapers from a restricted area based on a new swarming mobility model called CROMM-MS (Chaotic Rössler Mobility Model for Multi ... [more ▼]

In this paper we present a surveillance system for early detection of escapers from a restricted area based on a new swarming mobility model called CROMM-MS (Chaotic Rössler Mobility Model for Multi-Swarms). CROMM-MS is designed for controlling the trajectories of heterogeneous multi-swarms of aerial, ground and marine unmanned vehicles with important features such as prioritising early detections and success rate. A new Competitive Coevolutionary Genetic Algorithm (CompCGA) is proposed to optimise the vehicles’ parameters and escapers’ evasion ability using a predator-prey approach. Our results show that CROMM-MS is not only viable for surveillance tasks but also that its results are competitive in regard to the state-of-the-art approaches. [less ▲]

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See detailCultural representation in Luxembourgish street naming practices
Purschke, Christoph UL

in Linguistics Vanguard (2021), 7(s5), 111

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See detailOn the distribution of the order and index for the reductions of algebraic numbers
Sgobba, Pietro UL

in Journal of Number Theory (2021)

Let \alpha_1,...,\alpha_r be algebraic numbers in a number field K generating a subgroup of rank r in K*. We investigate under GRH the number of primes p of K such that each of the orders of (\alpha_i mod ... [more ▼]

Let \alpha_1,...,\alpha_r be algebraic numbers in a number field K generating a subgroup of rank r in K*. We investigate under GRH the number of primes p of K such that each of the orders of (\alpha_i mod p) lies in a given arithmetic progression associated to (\alpha_i). We also study the primes p for which the index of (\alpha_i mod p) is a fixed integer or lies in a given set of integers for each i. An additional condition on the Frobenius conjugacy class of p may be considered. Such results are generalizations of a theorem of Ziegler from 2006, which concerns the case r=1 of this problem. [less ▲]

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See detailNormalization as a mediator of emotion during unemployment
Houssemand, Claude UL; Rosato, Valeria; Thill, Steve et al

in Anxiety, Stress and Coping (2021)

Meta-analyses indicated detrimental effects on some psychological dimensions from job loss and extended periods of unemployment. This study analyses three phenomena: causes attributed to unemployment ... [more ▼]

Meta-analyses indicated detrimental effects on some psychological dimensions from job loss and extended periods of unemployment. This study analyses three phenomena: causes attributed to unemployment; processes for coping with unemployment; and the emotional impact of joblessness. Using an SEM approach, a model is created in which unemployment normalization acts as a mediator between locus of control and emotions. Method: questionnaires from 260 unemployed people in Luxembourg provided data on perceived control, coping, and emotions. Participants who attribute their situation to bad luck, believe more strongly that unemployment is due to external factors beyond their control, and recognize unemployment as being a common occurrence in life. Such cognitive attribution of unemployment has effects on job seekers’ emotions. Those who perceive unemployment in a more positive light experience more positive emotions and fewer negative affects. Negative perceptions of unemployment have no effect on the generation of positive emotion, but have an influence on negative affects. Finally, the influence of perceived-control on emotion is not direct, but is mediated by processes of unemployment normalization. Understanding how unemployed people perceive and experience their situations could help them be more effective in their search for new employment [less ▲]

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See detailWaiting as probation: selecting self-disciplining asylum seekers
Vianelli, Lorenzo UL; Gill, Nick; Hoellerer, Nicole

in Journal of Ethnic and Migration Studies (2021)

This article diagnoses and critiques a type of governmentality associated with waiting during protracted asylum appeal procedures by drawing upon data from a multi-methodological study of asylum ... [more ▼]

This article diagnoses and critiques a type of governmentality associated with waiting during protracted asylum appeal procedures by drawing upon data from a multi-methodological study of asylum adjudication in Europe. Focusing on Austria, Germany and Italy, we explore the use of integration-related considerations in asylum appeal processes by looking at the ways in which these considerations permeate judges’ decision-making, particularly, but not exclusively, on the granting of national, non-EU harmonised protection statuses. Building on insights from the literature on conditional integration we question the implicit sociopolitical biases and moral assumptions that underpin this permeation. We show that the use of integration-related considerations in asylum appeals transforms migrant waiting into a period of probation during which rejected asylum seekers’ conducts are governed and tested in relation to the use of time. More than simply waiting patiently, rejected asylum seekers are expected to wait productively, whereby productivity is assessed through the neoliberal imperatives of entrepreneurship, autonomy and selfimprovement. We thus contribute to scholarship on migrant waiting by showing how time is capitalised by state authorities even when – and actually because – it offers opportunities for migrants. [less ▲]

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See detailHyperbolic dispersion metasurfaces for molecular biosensing
Palermo, Giovanna; Sreekanth, Kandammathe Valiyaveedu; Maccaferri, Nicolò UL et al

in Nanophotonics (2021), 10(1), 295314

Sensor technology has become increasingly crucial in medical research and clinical diagnostics to directly detect small numbers of low-molecular-weight biomolecules relevant for lethal diseases. In recent ... [more ▼]

Sensor technology has become increasingly crucial in medical research and clinical diagnostics to directly detect small numbers of low-molecular-weight biomolecules relevant for lethal diseases. In recent years, various technologies have been developed, a number of them becoming core label-free technologies for detection of cancer biomarkers and viruses. However, to radically improve early disease diagnostics, tracking of disease progression and evaluation of treatments, today’s biosensing techniques still require a radical innovation to deliver high sensitivity, specificity, diffusion-limited transport, and accuracy for both nucleic acids and proteins. In this review, we discuss both scientific and technological aspects of hyperbolic dispersion metasurfaces for molecular biosensing. Optical metasurfaces have offered the tantalizing opportunity to engineer wavefronts while its intrinsic nanoscale patterns promote tremendous molecular interactions and selective binding. Hyperbolic dispersion metasurfaces support high-k modes that proved to be extremely sensitive to minute concentrations of ultralow-molecular-weight proteins and nucleic acids. [less ▲]

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See detailLa proposta di direttiva sui salari minimi adeguati nella prospettiva di contrasto all’in-work poverty
Ratti, Luca UL

in Diritto delle Relazioni Industriali (2021)

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See detailDoes Physical Activity Moderate the Influence of Sedentary Behavior on Health in Young People?
Schembri, Emanuel UL; Heinz, Andreas UL; Samuel, Robin UL

in Medicine Science in Sports Exercise (2021), 53(8S), 183--184

PURPOSE: High level of sedentary behavior (SB) may cause a number of health complaints (nHC) and lead to reduced self-rated health (SRH) in young people. The purpose of this study was to determine the ... [more ▼]

PURPOSE: High level of sedentary behavior (SB) may cause a number of health complaints (nHC) and lead to reduced self-rated health (SRH) in young people. The purpose of this study was to determine the relationship between SB, the magnitude of nHC, SRH, body mass index (BMI), and whether the amount of physical activity (PA) moderates this relationship. METHODS: The data was obtained from Youth Survey Luxembourg 2019 (N = 2802). The population characteristics include sociodemographic data such as age, gender, and socio-economics status (SES) (0 = low to 18 = high). The severity of nHC was the sum score of headaches, stomach aches, back aches, depression, irritableness, nervousness, dizziness, and difficulty falling asleep (0 = low to 32 = high). BMI was calculated by dividing body weight to the square of body height (kg/m2). SRH was measured on a 5-point scale (1 = very good to 5 = very bad). PA and SB were generated from factor analyses of the questionnaire items. SB is separated between leisure and gaming. Multiple regression analysis, adjusted for age, gender, and SES, was used to determine the relationships between SB, nHC, BMI, and SRH, and the moderating effect of PA. RESULTS: Out of the participants, 54% were female and 46% were male with the mean age of 22 ± 4 years (16-29 years). The mean SES was 9.3 ± 2.2 (1-13), BMI was 23 ± 4 kg/m2 (14-47 kg/m2), severity of the nHC was 9 ± 6 (0-32), and SRH was 1.8 ± 0.6 (1-5). The multiple regression analysis shows that high SB through leisure is associated with more severe nHC (unstandardized coefficient b = .49, p < .01). However, PA can decrease nHC (b = .39, p < .01) for participants with high leisure SB. No association has been found between SRH, BMI, and leisure SB. Furthermore, an increase in SB through gaming is associated with higher BMI (b = .35, p < .01) and worse SRH (b = .09, p < .00). A relationship between the severity of nHC and gaming is not found. In all cases, a higher PA shows a significantly better nHC, SRH, and BMI. CONCLUSIONS: The results show that PA has a positive moderating effect of the relationship on leisure SB and nHC in young people in Luxembourg. Increased SB causes higher nHC, worse SRH, and higher BMI and young people who do more PA have lower severity in nHC, and better BMI and SRH. Therefore, it is important for young people to reduce SB and implement a sufficient amount of PA to improve overall health. [less ▲]

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See detailPost-growth perspectives in Economic Geography
Schulz, Christian UL; Braun, Boris

in Die Erde (2021), 152(4), 213-217

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See detailVisual Acquaintance, Action and the Explanatory Gap
Raleigh, Thomas UL

in Synthese (2021), 198

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See detailHistory in the Era of Massive Data
Clavert, Frédéric UL

in Geschichte und Gesellschaft (2021), 47(1), 175--194

Abstract This article draws on the experience of the Luxembourg Centre for Contemporary and Digital History (C2DH) research project, ``\#ww1 the centenary of the Great War on Twitter,'' to contemplate ... [more ▼]

Abstract This article draws on the experience of the Luxembourg Centre for Contemporary and Digital History (C2DH) research project, ``\#ww1 the centenary of the Great War on Twitter,'' to contemplate what it means to use born-digital and big data primary sources, both as a methodology and as a contribution to the field of memory studies and contemporary history more broadly. It discusses the notion of distant reading in order to show the interest of multiscale reading in the framework of big data. It also elaborates upon the use of reflexive thinking in terms of what we really study when using this kind of primary source materials (tweets and, more generally, feeds of borndigital sources), namely: temporalities and information circulation. [less ▲]

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See detailFirst law of quantum thermodynamics in a driven open two-level system
Juan-Delgado, Adrian; Chenu, Aurélia UL

in Physical Review. A (2021)

Assigning the variations of internal energy into heat or work contributions is a challenging task due to the fact that these properties are trajectory dependent. A number of proposals have been put ... [more ▼]

Assigning the variations of internal energy into heat or work contributions is a challenging task due to the fact that these properties are trajectory dependent. A number of proposals have been put forward for open quantum systems following an arbitrary dynamics. We here focus on nonequilibrium thermodynamics of a two-level system and explore in addition to the conventional approach, two definitions motivated by either classical work or heat in which the driving Hamiltonian or the trajectory itself, respectively, are used to set up a reference basis. We first give the thermodynamic properties for an arbitrary dynamics and illustrate the results on the Bloch sphere. Then, we solve the particular example of a periodically driven qubit interacting with a dissipative and decoherence bath. Our results illustrate the trajectory-dependent character of heat and work and how contributions originally assigned to dissipation in the Lindblad equation can become a coherent part assigned to work. [less ▲]

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See detailLe voyage de Bartlebooth ou le tour de son Monde
Raus, Tonia UL

in Cahiers Georges Perec (2021), 14

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See detailMulti-informant assessment of bullying in Austrian schools
Paljakka, Antonia; Schwab, Susanne; Zurbriggen, Carmen UL

in Frontiers in Education (2021), 6(712318),

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See detailDer Kalte Krieg und sein Wetter
Nanz, Tobias; Pause, Johannes UL

in Dritte Natur. Technik - Kapital - Umwelt (2021), 3

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See detailELIXIR and Toxicology: a community in development
Martens, Marvin; Stierum, Rob; Schymanski, Emma UL et al

in F1000Research (2021), 10

Toxicology has been an active research field for many decades, with academic, industrial and government involvement. Modern omics and computational approaches are changing the field, from merely disease ... [more ▼]

Toxicology has been an active research field for many decades, with academic, industrial and government involvement. Modern omics and computational approaches are changing the field, from merely disease-specific observational models into target-specific predictive models. Traditionally, toxicology has strong links with other fields such as biology, chemistry, pharmacology and medicine. With the rise of synthetic and new engineered materials, alongside ongoing prioritisation needs in chemical risk assessment for existing chemicals, early predictive evaluations are becoming of utmost importance to both scientific and regulatory purposes. ELIXIR is an intergovernmental organisation that brings together life science resources from across Europe. To coordinate the linkage of various life science efforts around modern predictive toxicology, the establishment of a new ELIXIR Community is seen as instrumental. In the past few years, joint efforts, building on incidental overlap, have been piloted in the context of ELIXIR. For example, the EU-ToxRisk, diXa, HeCaToS, transQST, and the nanotoxicology community have worked with the ELIXIR TeSS, Bioschemas, and Compute Platforms and activities. In 2018, a core group of interested parties wrote a proposal, outlining a sketch of what this new ELIXIR Toxicology Community would look like. A recent workshop (held September 30th to October 1st, 2020) extended this into an ELIXIR Toxicology roadmap and a shortlist of limited investment-high gain collaborations to give body to this new community. This Whitepaper outlines the results of these efforts and defines our vision of the ELIXIR Toxicology Community and how it complements other ELIXIR activities. [less ▲]

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See detailEntwicklung und erste empirische Überprüfung des Fragebogens zur Erfassung des generellen emotionalen Selbstkonzepts in der frühen Adoleszenz (FEGESK-A)
Schmidt, Philipp; Zurbriggen, Carmen UL

in Empirische Pädagogik (2021), 35(2), 183201

The general emotional self-concept (GESC) is highly relevant to psychosocial development in adolescence. However, the GESC is hardly considered within empirical education and educational science. This is ... [more ▼]

The general emotional self-concept (GESC) is highly relevant to psychosocial development in adolescence. However, the GESC is hardly considered within empirical education and educational science. This is also mirrored by the lack of appropriate measurement instruments. The aim of this paper is the development and first empirical evaluation of a questionnaire assessing the general emotional self-concept in early ado-lescence (QAGESC-A). The development of the QAGESC-A was based on the hierarchically structured Marsh/Shavelson model of the general self-concept. Two working models were generated. According to working model I, the GESC contains three dimensions (perception, expression, coping), whereas model II comprises two dimensions (perception, modulation). In accordance with these self-concept dimensions, 24 items were generated. Based on a sample of a pilot study with 142 students (MRageR = 10.98 years, SDRageR = 0.89 years), the questionnaire was then reduced stepwise to 12 items and evaluated for factorial validity and reliability. The results of the confirmatory factor analysis provide first evidence that the two-factor model fitted slightly better than the three-factor model. The questionnaire shows good reliability (α = .82, ω = .85) and the scales exhibit acceptable internal consistencies (α / ω = .75). [less ▲]

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See detailFAIR-ifying the Exposome Journal: Templates for Chemical Structures and Transformations
Schymanski, Emma UL; Bolton, Evan E.

in Exposome (2021)

Abstract The exposome, the totality of lifetime exposures, is a new and highly complex paradigm for health and disease. Tackling this challenge requires an effort well beyond single individuals or ... [more ▼]

Abstract The exposome, the totality of lifetime exposures, is a new and highly complex paradigm for health and disease. Tackling this challenge requires an effort well beyond single individuals or laboratories, where every piece of the puzzle will be vital. The launch of this new Exposome journal coincides with the evolution of the exposome through its teenage years and into a growing maturity in an increasingly open and FAIR (findable, accessible, interoperable, reusable) world. This letter discusses how both authors and the Exposome journal alike can help increase the FAIRness of the chemical structural information and the associated metadata in the journal, aiming to capture more details about the chemistry of exposomics. The proposed chemical structure template can serve as an interoperable supplementary format that is made accessible through the website and more findable by linking the DOI of this data file to the article DOI metadata, supporting further reuse. An additional Transformations template provides authors with a means to connect predecessor (parent, substrate) molecules to successor (transformation product, metabolite) molecules and thus provide FAIR connections between observed (i.e., experimental) chemical exposures and biological responses, to help improve the public knowledgebase on exposome-related transformations. These connections are vital to extend current biochemical knowledge and to fulfil the current Exposome definition of “the cumulative measure of environmental influences and associated biological responses throughout the lifespan including exposures from the environment, diet, behaviour, and endogenous processes”. [less ▲]

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See detailCasual Leisure in Rich-Prospect: Advancing Visual Information Behavior for Digital Museum Collections
Morse, Christopher UL; Niess, Jasmin; Lallemand, Carine UL et al

in Journal on Computing and Cultural Heritage (2021), 14(3),

As digital cultural collections become increasingly sophisticated in their scope and functionality, there is a need to build an in-depth understanding concerning the information behaviors of users in this ... [more ▼]

As digital cultural collections become increasingly sophisticated in their scope and functionality, there is a need to build an in-depth understanding concerning the information behaviors of users in this new domain. Research has demonstrated that many digital museum visitors are engaged in casual leisure during exploration of a collection, suggesting that they do not have an inherent information goal but rather seek new experiences or learning opportunities based on personal curiosity and moments of discovery. Consequently, understanding how to translate casual leisure contexts into meaningful interaction design may play a critical role in designing engaging digital collections. Our study reports on the user experience of a largely unexplored user interface design framework called rich-prospect, which was originally developed to enhance browsing and discovery for complex visual collections. We performed a mixed-method, within-subjects study (N=30) that simulated a casual leisure approach to information browsing and retrieval across three different rich-prospect interfaces for digital cultural heritage. Our results show that rich-prospect scores well in the hedonic facets of its user experience, whereas pragmatic aspects have room for improvement. Additionally, through our qualitative analysis of participant feedback, we derived salient themes relating to the exploratory browsing experience. We conclude with a series of design implications to better connect interactive elements with casual leisure contexts for digital cultural collections. © 2021 Owner/Author. [less ▲]

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See detailAnterior cingulate cortex activity during rest is related to alterations in pain perception in aging
Terrasa, Juan L.; Montoya, Pedro; Sitges, Carolina et al

in Frontiers in Aging Neuroscience (2021)

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See detailJérôme Denis, Le Travail invisible des données. Éléments pour une sociologie des infrastructures scripturales Paris, Presses des Mines, 2018, 206 pages
Schafer, Valerie UL

in Questions de Communication (2021), 38

Recension de Jérôme Denis, Le Travail invisible des données. Éléments pour une sociologie des infrastructures scripturales, Paris, Presses des Mines, 2018, 206 pages

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See detailOptimal Detection of Multiple Symbol-Slotted Random Access based Packet Transmissions
Kisseleff, Steven UL; Gerstacker, Wolfgang H.

in IEEE Wireless Communications Letters (2021)

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See detailEuropean Embeddedness and the Founding of Luxembourg’s 21st Century Research University
Braband, Gangolf; Powell, Justin J W UL

in European Journal of Higher Education (2021)

At the heart of Western Europe and culturally embedded in the “Greater Region,” Luxembourg for centuries sent its youth abroad for tertiary education, without its own national university. Evolving ... [more ▼]

At the heart of Western Europe and culturally embedded in the “Greater Region,” Luxembourg for centuries sent its youth abroad for tertiary education, without its own national university. Evolving provisions of postsecondary education after 1945 followed construction of several teaching and research institutes that did not offer full-fledged tertiary education certification. With global higher education expansion and European developments providing a window of opportunity, the critical juncture occurred in 2003, with the founding of the national flagship University of Luxembourg (uni.lu)—since leading to an extraordinary case of university institutionalization. Traditions were explicitly maintained, but reshaped, in the new university, with student mobility continuing to bolster the national elite’s pan-European networks and internationalization. Reflecting its hyper-diversity and multilingual culture as well as porous national borders, Luxembourg’s investments in higher education capacity-building, via a 21st century research university, have been thoroughly European. Today, Luxembourg has the highest proportion of workers with tertiary attainment and of internationally mobile students, testament to its maintained mobility tradition and national policy change facilitated by global models and European norms. [less ▲]

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See detailOptimization of the Return Link Carrier Planning for a Constant Coding and Modulation Satellite Network
Lacoste, Clément UL; Maturo, Nicola UL; Chatzinotas, Symeon UL et al

in Frontiers in Communications and Networks (2021), 2

In this paper, we propose an approach to optimize the frequency plan and associated bandwidth allocation in the return link of a broadband satellite network, by exploring several design techniques for ... [more ▼]

In this paper, we propose an approach to optimize the frequency plan and associated bandwidth allocation in the return link of a broadband satellite network, by exploring several design techniques for carrier allocation plans. Since bandwidth is a limited resource in satellite telecommunications, the minimization of bandwidth usage is a core issue that satellite communication service providers must solve, in particular for networks using a constant coding and modulation plan, which lacks the flexibility found in newer satellite communication products and can be subject to hardware constraints. This problematic led us to raise the following question: how can the long term bandwidth requirement of the network be minimized, given a set of ground terminals, of Modulations and Codings, and of discrete bandwidths. In this document we formally define the long-term carrier allocation problem and analyze current practical solutions. We subsequently investigate two other potential solutions, found to be more bandwidth-efficient: one based on heuristics and another based on integer linear programming. Finally, we look at the impact of several parameters on the performance of those three methods. Overall we observed marginal reductions in bandwidth, however significant gains were reached for networks with small return links with low committed information rate, a case in which some constant coding and modulation networks could fall. We concluded that those networks could benefit from our methods and see a significant reduction in bandwidth, and subsequently operational costs, at low implementation costs. [less ▲]

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See detailDie Offenbarung des Geheimen? Mittelalterliche Gottesurteile als Erkenntnisquelle und ihr Niederschlag in der mittelhochdeutschen Literatur
Sieburg, Heinz UL

in Das Mittelalter. Perspektiven mediävistischer Forschung. Beihefte 15 (2021), 15

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See detailKyriakopoulou E. and Picard PM (2021), On the Design of Sustainable Cities: Local Traffic Pollution and Urban Structure, Journal of Environmental Economics and Management, 106, March 2021, 102418.
Picard, Pierre M UL; Kyriakopoulou, Efthymia

in Journal of Environmental Economics and Management (2021), 107

This paper investigates the impact of local traffic pollution on the formation of residential and business districts. While firms benefit from local production externalities, households commute to their ... [more ▼]

This paper investigates the impact of local traffic pollution on the formation of residential and business districts. While firms benefit from local production externalities, households commute to their workplaces with private vehicles and exert a local pollution externality on the residents living along the urban transport networks. The spatial location of firms and residents endogenously results from the trade-off between the production and pollution externalities and the commuting costs. The analysis shows that in monocentric cities the benefits associated with a fall in per-vehicle pollution are absorbed by rents paid to absentee landlords. When a city includes business and residential districts as well as a district mixing both agents, a lower per-vehicle pollution enlarges the residential districts and shifts the business districts closer to the geographical center of the city. The paper finally studies the optimal city structure. The first-best policies that fully internalize the externalities still foster business agglomeration. [less ▲]

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See detailKilling Stubborn Mutants with Symbolic Execution
Titcheu Chekam, Thierry UL; Papadakis, Mike UL; Cordy, Maxime UL et al

in ACM Transactions on Software Engineering and Methodology (2021), 30(2), 191--1923

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See detailCompétence pour ordonner la mainlevée d'une saisie conservatoire transfrontière
Cuniberti, Gilles UL

in Revue Critique de Droit International Privé (2021), (1), 157

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See detailEducational Videogame to Learn the Periodic Table: Design Rationale and Lessons Learned
Traver, V. Javier; Leiva, Luis A. UL; Martí-Centelles, Vicente et al

in Journal of Chemical Education (2021)

The periodic table allows students to easily understand the chemical elements and predict the behavior of theoretical yet undiscovered new elements. Many memorization techniques have been used for ... [more ▼]

The periodic table allows students to easily understand the chemical elements and predict the behavior of theoretical yet undiscovered new elements. Many memorization techniques have been used for learning the periodic table, yet serious games (i.e., designed for a primary purpose other than pure entertainment) have been underexplored to complement or even replace such memorization techniques. Since CHEMMEND, an existing physical card game, was found to assist with learning the periodic table, we explore the potential of E-CHEMMEND, a digital version of the game as an aid to memorize the group and period numbers of the elements. E-CHEMMEND is a single-player serious game to explore the effect of four different game conditions involving two experimental factors that account for different educational scenarios. The first factor investigates the role of playing through levels of increasing difficulty versus playing with all elements from the very beginning. The second factor investigates the role of displaying the group and period numbers of the chemical element along with its symbol versus only displaying the element symbol. Preliminary results show that E-CHEMMEND is perceived as more enjoyable when the group and period numbers are displayed. In contrast, the game is found to better assist learning when this information is hidden and levels are shown. Taken together, our results suggest that a variety of educational purposes can be accommodated with a range of game settings. Ultimately, the design rationale and the lessons learned while testing E-CHEMMEND will be valuable for chemistry instructors and education researchers. A desktop-based Windows executable version of the game is available at http://www.chemmend.uji.es/game. [less ▲]

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See detailSergey Kichko, Pierre M. Picard, (2021), Effect of conformism on firm selection, product quality and home bias, Journal of Economic Behavior & Organization, 185, pp. 402-418.
Picard, Pierre M UL; Kichko, Sergey

in Journal of Economic Behavior and Organization (2021), 185

This paper investigates the impact of local traffic pollution on the formation of residential and business districts. While firms benefit from local production externalities, households commute to their ... [more ▼]

This paper investigates the impact of local traffic pollution on the formation of residential and business districts. While firms benefit from local production externalities, households commute to their workplaces with private vehicles and exert a local pollution externality on the residents living along the urban transport networks. The spatial location of firms and residents endogenously results from the trade-off between the production and pollution externalities and the commuting costs. The analysis shows that in monocentric cities the benefits associated with a fall in per-vehicle pollution are absorbed by rents paid to absentee landlords. When a city includes business and residential districts as well as a district mixing both agents, a lower per-vehicle pollution enlarges the residential districts and shifts the business districts closer to the geographical center of the city. The paper finally studies the optimal city structure. The first-best policies that fully internalize the externalities still foster business agglomeration. [less ▲]

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See detailBisimulations for Verifying Strategic Abilities with an Application to the ThreeBallot Voting Protocol
Belardinelli, Francesco; Condurache, Rodica; Dima, Catalin et al

in Information and Computation (2021), 276

We propose a notion of alternating bisimulation for strategic abilities under imperfect information. The bisimulation preserves formulas of ATL$^*$ for both the {\em objective} and {\em subjective ... [more ▼]

We propose a notion of alternating bisimulation for strategic abilities under imperfect information. The bisimulation preserves formulas of ATL$^*$ for both the {\em objective} and {\em subjective} variants of the state-based semantics with imperfect information, which are commonly used in the modeling and verification of multi-agent systems. Furthermore, we apply the theoretical result to the verification of coercion-resistance in the ThreeBallot voting system, a voting protocol that does not use cryptography. In particular, we show that natural simplifications of an initial model of the protocol are in fact bisimulations of the original model, and therefore satisfy the same ATL$^*$ properties, including coercion-resistance. These simplifications allow the model-checking tool MCMAS to terminate on models with a larger number of voters and candidates, compared with the initial model. [less ▲]

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See detailTagungsbericht: Rethinking the Histories and Legacies of Industrial Cities
Derian, Maxime UL; van de Maele, Jens UL

in Moderne Stadtgeschichte (2021), (1), 145-150

The history of (Western) European industrial cities is often told as a tragic tale of rise and decline: from rapid industrialisation in the late 19th century and economic prosperity during the Trente ... [more ▼]

The history of (Western) European industrial cities is often told as a tragic tale of rise and decline: from rapid industrialisation in the late 19th century and economic prosperity during the Trente glorieuses to the structural changes of the late 1970s and the subsequent deindustrialisation of the 1980s and 1990s – decades in which most mines and steelworks closed down, unemployment rates went up, new social problems emerged, workers’ identities eroded, and once prosperous urban centres became faced with shrinking populations and empty stores in their shopping streets. Finally, since the 2000s, former industrial towns have tried to reinvent themselves as creative and cultural centres. If we take a closer look, however, we can see that the socio-economic, demographic and cultural transitions were more complex than suggested by a simple rise-and-decline narrative. [less ▲]

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See detailGendered Prices
Kräussl, Roman UL; Adams, Renee B.; Navone, Marco A. et al

in Review of Financial Studies (2021), 34(8)(3789-3839),

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See detailLocal Social Interaction and Urban Equilibria
Picard, Pierre M UL; Augeraud-Veron, Emmanuelle; Maruhenda, Fransico

in Mathematical Social Sciences (2021), 112

In this paper we investigate the effect of local interaction in a simple urban economics model. Agents interact with others if and only if their interaction benefit outweighs their travel cost and ... [more ▼]

In this paper we investigate the effect of local interaction in a simple urban economics model. Agents interact with others if and only if their interaction benefit outweighs their travel cost and therefore meet others only within finite geographic windows. We show that two or more cites may co-exist at the equilibrium provided that they are sufficiently distant. For any interaction surplus function, there exists a unique spatial equilibrium on not too large city supports. The population density within a city is determined by a second order advance-delay differential equation, whose solutions are fully characterized for linear interaction surplus functions. Numerical analyses show that more localized interactions yield flatter population density and land rents over larger extents of the city support. They do not give support to the idea that multiple subcenters can be caused by small and finite geographic windows of interaction. [less ▲]

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See detailAgeism and Older People's Health and Well-Being during the Covid-19 Pandemic: The Moderating Role of Subjective Aging
Kornadt, Anna Elena UL; Albert, Isabelle UL; Hoffmann, Martine et al

in European Journal of Ageing (2021), 18

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See detailiPSC-Derived Microglia as a Model to Study Inflammation in Idiopathic Parkinson's Disease.
Badanjak, Katja UL; Mulica, Patrycja UL; Smajic, Semra UL et al

in Frontiers in cell and developmental biology (2021), 9

Parkinson's disease (PD) is a neurodegenerative disease with unknown cause in the majority of patients, who are therefore considered "idiopathic" (IPD). PD predominantly affects dopaminergic neurons in ... [more ▼]

Parkinson's disease (PD) is a neurodegenerative disease with unknown cause in the majority of patients, who are therefore considered "idiopathic" (IPD). PD predominantly affects dopaminergic neurons in the substantia nigra pars compacta (SNpc), yet the pathology is not limited to this cell type. Advancing age is considered the main risk factor for the development of IPD and greatly influences the function of microglia, the immune cells of the brain. With increasing age, microglia become dysfunctional and release pro-inflammatory factors into the extracellular space, which promote neuronal cell death. Accordingly, neuroinflammation has also been described as a feature of PD. So far, studies exploring inflammatory pathways in IPD patient samples have primarily focused on blood-derived immune cells or brain sections, but rarely investigated patient microglia in vitro. Accordingly, we decided to explore the contribution of microglia to IPD in a comparative manner using, both, iPSC-derived cultures and postmortem tissue. Our meta-analysis of published RNAseq datasets indicated an upregulation of IL10 and IL1B in nigral tissue from IPD patients. We observed increased expression levels of these cytokines in microglia compared to neurons using our single-cell midbrain atlas. Moreover, IL10 and IL1B were upregulated in IPD compared to control microglia. Next, to validate these findings in vitro, we generated IPD patient microglia from iPSCs using an established differentiation protocol. IPD microglia were more readily primed as indicated by elevated IL1B and IL10 gene expression and higher mRNA and protein levels of NLRP3 after LPS treatment. In addition, IPD microglia had higher phagocytic capacity under basal conditions-a phenotype that was further exacerbated upon stimulation with LPS, suggesting an aberrant microglial function. Our results demonstrate the significance of microglia as the key player in the neuroinflammation process in IPD. While our study highlights the importance of microglia-mediated inflammatory signaling in IPD, further investigations will be needed to explore particular disease mechanisms in these cells. [less ▲]

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See detailChemical vapor deposition of CoFe2O4 micropillar arrays with enhanced magnetic properties
Aspe, B.; Malyeyev, Artem UL; Vakilinejad, A. et al

in Journal of Alloys and Compounds (2021), 890

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See detailChanges in Neighborhood-Level Socioeconomic Disadvantage and Older Americans’ Cognitive Functioning
Settels, Jason UL; Leist, Anja UL

in Health and Place (2021)

Background: While associations of neighborhood conditions with cognitive functioning at older ages have been established, few studies have investigated with a dynamic perspective if changing neighborhood ... [more ▼]

Background: While associations of neighborhood conditions with cognitive functioning at older ages have been established, few studies have investigated with a dynamic perspective if changing neighborhood socioeconomic conditions affect older residents’ cognitive declines, and which putative factors mediate this relationship. Method: Using data from waves 2 (2010–2011) and 3 (2015–2016) of the National Social Life, Health, and Aging Project (NSHAP) survey (n = 1837), ordinary least squares regressions and mediation analyses were conducted, adjusting for multiple confounders and testing eight putative mediators. Results: Worsening neighborhood socioeconomic circumstances were associated with cognitive declines. Changes in depressive symptoms, sizes of close social networks, and physical activity substantially mediated this relationship. Discussion: While 18.10% of the total effect occurred through these mechanisms, further pathways may work through contextual- and individual-level variables not assessed in the NSHAP. [less ▲]

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See detailPredictive and interpretable models via the stacked elastic net
Rauschenberger, Armin UL; Glaab, Enrico UL; van de Wiel, Mark

in Bioinformatics (2021), 37(14), 20122016

Motivation: Machine learning in the biomedical sciences should ideally provide predictive and interpretable models. When predicting outcomes from clinical or molecular features, applied researchers often ... [more ▼]

Motivation: Machine learning in the biomedical sciences should ideally provide predictive and interpretable models. When predicting outcomes from clinical or molecular features, applied researchers often want to know which features have effects, whether these effects are positive or negative, and how strong these effects are. Regression analysis includes this information in the coefficients but typically renders less predictive models than more advanced machine learning techniques. Results: Here we propose an interpretable meta-learning approach for high-dimensional regression. The elastic net provides a compromise between estimating weak effects for many features and strong effects for some features. It has a mixing parameter to weight between ridge and lasso regularisation. Instead of selecting one weighting by tuning, we combine multiple weightings by stacking. We do this in a way that increases predictivity without sacrificing interpretability. Availability and Implementation: The R package starnet is available on GitHub: https://github.com/rauschenberger/starnet. [less ▲]

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See detailStein's method of exchangeable pairs in multivariate functional approximations
Döbler, Christian UL; Kasprzak, Mikolaj UL

in Electronic Journal of Probability (2021), 26

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See detailEntre 'dette du sang' et 'military labour migration': les Luxembourgeois engagés dans la Légion étrangère (1831-1914)
Vecchiato, Sébastien; Kolnberger, Thomas UL

in Revue Historique des Armées (2021), 302

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See detailDesign of a 2-Bit Neural Network Quantizer for Laplacian Source
Peric, Zoran; Savic, Milan; Simic, Nikola et al

in Entropy (2021), 23(8), 933

Achieving real-time inference is one of the major issues in contemporary neural network applications, as complex algorithms are frequently being deployed to mobile devices that have constrained storage ... [more ▼]

Achieving real-time inference is one of the major issues in contemporary neural network applications, as complex algorithms are frequently being deployed to mobile devices that have constrained storage and computing power. Moving from a full-precision neural network model to a lower representation by applying quantization techniques is a popular approach to facilitate this issue. Here, we analyze in detail and design a 2-bit uniform quantization model for Laplacian source due to its significance in terms of implementation simplicity, which further leads to a shorter processing time and faster inference. The results show that it is possible to achieve high classification accuracy (more than 96% in the case of MLP and more than 98% in the case of CNN) by implementing the proposed model, which is competitive to the performance of the other quantization solutions with almost optimal precision. [less ▲]

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See detailAttentive Sequence-to-Sequence Modeling of Stroke Gestures Articulation Performance
Kumar T., Lokesh; Leiva, Luis A. UL

in IEEE Transactions on Human-Machine Systems (2021), 51(6),

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See detailPreface of the special issue ‘Logic, argumentation and AI’ in JLC
Dong, Huimin; Pang, Jun UL; Wang, Yi

in Journal of Logic and Computation (2021), 31(8), 1901-1902

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See detailNo Interface, No Problem: Gesture Recognition on Physical Objects Using Radar Sensing
Attygalle, Nuwan T.; Leiva, Luis A. UL; Kljun, Matjaž et al

in Sensors (2021), 21(17),

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See detailStochastic Thermodynamics of Nonlinear Electronic Circuits: A Realistic Framework for Computing Around kT
Freitas, Nahuel; Delvenne, Jean-Charles; Esposito, Massimiliano UL

in Phys. Rev. X (2021), 11(3), 031064

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See detailLe recours collectif luxembourgeois à l’épreuve du droit européen
Menetrey, Séverine UL

in Annales du Droit Luxembourgeois (2021)

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See detailMeasurement Invariance of Test Anxiety Across Four School Subjects
Schneider, Rebecca; Sparfeldt, Jörn R; Niepel, Christoph UL et al

in European Journal of Psychological Assessment (2021)

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See detailIn Vitro Red Blood Cell Segregation in Sickle Cell Anemia
Claveria, Viviana; Connes, Philippe; Lanotte, Luca et al

in FRONTIERS IN PHYSICS (2021), 9

Red blood cells in sickle cell anemia (sRBC) are more heterogeneous in their physical properties than healthy red blood cells, spanning adhesiveness, rigidity, density, size, and shape. sRBC with ... [more ▼]

Red blood cells in sickle cell anemia (sRBC) are more heterogeneous in their physical properties than healthy red blood cells, spanning adhesiveness, rigidity, density, size, and shape. sRBC with increased adhesiveness to the vascular wall would trigger vaso-occlusive like complications, a hallmark of sickle cell anemia. We investigated whether segregation occurs among sRBC flowing in micron-sized channels and tested the impact of aggregation on segregation. Two populations of sRBC of different densities were separated, labeled, and mixed again. The mixed suspension was flowed within glass capillary tubes at different pressure-drops, hematocrit, and suspending media that promoted or not cell aggregation. Observations were made at a fixed channel position. The mean flow velocity was obtained by using the cells as tracking particles, and the cell depleted layer (CDL) by measuring the distance from the cell core border to the channel wall. The labeled sRBC were identified by stopping the flow and scanning the cells within the channel section. The tube hematocrit was estimated from the number of fluorescence cells identified in the field of view. In non-aggregating media, our results showed a heterogeneous distribution of sRBC according to their density: low-density sRBC population remained closer to the center of the channel, while the densest cells segregated towards the walls. There was no impact of the mean flow velocity and little impact of hematocrit. This segregation heterogeneity could influence the ability of sRBC to adhere to the vascular wall and slow down blood flow. However, promoting aggregation inhibited segregation while CDL thickness was enhanced by aggregation, highlighting a potential protective role against vaso-occlusion in patients with sickle cell anemia. [less ▲]

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See detailCrowdsourced COVID-19 Collections: A brief overview
Zumthurm, Tizian UL

in International Public History (2021)

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See detailSubjective Well-Being of Adolescents in Luxembourg, Germany, and Brazil During the COVID-19 Pandemic
Engel de Abreu, Pascale UL; Neumann, Sascha; Wealer, Cyril UL et al

in Journal of Adolescent Health (2021)

Purpose: This study explores adolescent well-being during the first wave of the COVID-19 pandemic in two high-income countries from Europe and one middle-income country from South America. The aim is to ... [more ▼]

Purpose: This study explores adolescent well-being during the first wave of the COVID-19 pandemic in two high-income countries from Europe and one middle-income country from South America. The aim is to investigate the correlates of different dimensions of subjective well- being in 10- to 16-year-olds from different cultural contexts. Methods: An online, self-report questionnaire was completed by 1,613 adolescents in Luxembourg, Germany, and Brazil between May and July 2020. The outcome variables were measures of life satisfaction and emotional well-being during the COVID-19 pandemic. The study included a range of sociodemographic, interpersonal, and intrapersonal covariates. Data were analyzed using descriptive statistics and latent variable structural equational modeling. Results: A two-factor model of subjective well-being, consisting of life satisfaction and emotional well-being latent constructs, fitted well with this sample data for Luxembourg, Germany, and Brazil. Results showed that gender, socioeconomic status, intrapersonal factors, quantity and type of schoolwork, and relationships with adults were important common predictors of individual differences in subjective well-being during COVID-19. Fear of illness emerged as the strongest correlate of emotional well-being across the three countries. Conclusions: This study indicates that girls and adolescents from low-income homes may be especially vulnerable to negative secondary impacts of COVID-19 that can affect mental health. It identified several common correlates of subjective well-being in adolescents from different cultural settings, including factors that may be changeable, such as the following: the way adults listen to adolescents, schoolwork during distant learning, and fear of illness. Findings can inform the development of quality interventions for promoting the well-being of adolescents during a global pandemic. [less ▲]

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See detailRed blood cell phenotyping from 3D confocal images using artificial neural networks.
Simionato, Greta; Hinkelmann, Konrad; Chachanidze, Revaz et al

in PLoS computational biology (2021), 17(5), 1008934

The investigation of cell shapes mostly relies on the manual classification of 2D images, causing a subjective and time consuming evaluation based on a portion of the cell surface. We present a dual-stage ... [more ▼]

The investigation of cell shapes mostly relies on the manual classification of 2D images, causing a subjective and time consuming evaluation based on a portion of the cell surface. We present a dual-stage neural network architecture for analyzing fine shape details from confocal microscopy recordings in 3D. The system, tested on red blood cells, uses training data from both healthy donors and patients with a congenital blood disease, namely hereditary spherocytosis. Characteristic shape features are revealed from the spherical harmonics spectrum of each cell and are automatically processed to create a reproducible and unbiased shape recognition and classification. The results show the relation between the particular genetic mutation causing the disease and the shape profile. With the obtained 3D phenotypes, we suggest our method for diagnostics and theragnostics of blood diseases. Besides the application employed in this study, our algorithms can be easily adapted for the 3D shape phenotyping of other cell types and extend their use to other applications, such as industrial automated 3D quality control. [less ▲]

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See detailThe application of factorial surveys to study recruiters’ hiring intentions: comparing designs based on hypothetical and real vacancies
Gutfleisch, Tamara; Samuel, Robin UL; Sacchi, Stefan

in Quality & Quantity (2021), 55

Factorial survey experiments have been widely used to study recruiters’ hiring intentions. Respondents are asked to evaluate hypothetical applicant descriptions, which are experimentally manipulated, for ... [more ▼]

Factorial survey experiments have been widely used to study recruiters’ hiring intentions. Respondents are asked to evaluate hypothetical applicant descriptions, which are experimentally manipulated, for hypothetical job descriptions. However, this methodology has been criticized for putting respondents in hypothetical situations that often only partially correspond to real-life hiring situations. It has been proposed that this criticism can be overcome by sampling real-world vacancies and the recruiters responsible for filling them. In such an approach, only the applicants’ descriptions are hypothetical; respondents are asked about a real hiring problem, which might increase internal and external validity. In this study, we test whether using real vacancies triggers more valid judgments compared to designs based on hypothetical vacancies. The growing number of factorial survey experiments conducted in employer studies makes addressing this question relevant, both for methodological and practical reasons. However, despite the potential implications for the validity of data, it has been neglected so far. We conducted a factorial survey experiment in Luxembourg, in which respondents evaluated hypothetical applicants referring either to a currently vacant position in their company or to a hypothetical job. Overall, we found little evidence for differences in responses by the design of the survey experiment. However, the use of real vacancies might prove beneficial depending on the research interest. We hope that our comparison of designs using real and hypothetical vacancies contributes to the emerging methodological inquiry on the possibilities and limits of using factorial survey experiments in research on hiring. [less ▲]

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See detail‘It’s the political economy..!’ A moment of truth for the eurozone and the EU
Dani, Marco; Chiti, Edoardo; Mendes, Joana UL et al

in International Journal of Constitutional Law (2021), 19(1), 309327

The article discusses the Weiss dispute from a political economy perspective. It first sets this litigation in its wider context, namely the protracted transformation of the Economic and Monetary Union ... [more ▼]

The article discusses the Weiss dispute from a political economy perspective. It first sets this litigation in its wider context, namely the protracted transformation of the Economic and Monetary Union (EMU) over the last decade, a decade which has revealed the structural flaws in its design. It then briefly sketches the changing role of central banking, from a fixation on fighting inflation to a more recent focus on combating deflation. This helps to explain the problematic character of the Weiss rulings and the commentaries they have provoked, illustrating a general failure to consider the limits of law, the result of clinging to different parts of the EMU wreckage, on the assumption that the current constitutional framework remains viable. Finally, the article emphasizes the transformative potential of the Weiss saga. The judicial conflict lays bare the unsustainability of the present arrangements, and reveals the necessity of a choice between genuinely federal integration and coordinated dismantling of EMU. [less ▲]

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See detailCONSOLE: intruder detection using a UAV swarm and security rings
Stolfi, Daniel H.; Brust, Matthias R. UL; Danoy, Grégoire UL et al

in Swarm Intell. (2021), 15(3), 205--235

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See detailSoft law Evropských orgánů dohledu: nezávazné unijní akty se závaznými vnitrostátními účinky
Hubkova, Pavlina UL

in Právní rozhledy (2021), 29(17), 573-583

In the EU, some tasks in the area of financial regulation were delegated to the European Supervisory Authorities (ESAs). These EU agencies are empowered, among others, to issue guidelines and ... [more ▼]

In the EU, some tasks in the area of financial regulation were delegated to the European Supervisory Authorities (ESAs). These EU agencies are empowered, among others, to issue guidelines and recommendations, i. e. soft law acts. From the Union's point of view, these acts are not legally binding. However, in the Czech context and mainly due to their enforcement by the Czech National Bank (CNB), these acts become practically binding for their main addressees - financial institutions. Such a setting demonstrates how multilevel regulation and enforcement in the EU work. The article analyses the Czech regulatory context and the practice of the CNB in order to show that ESA soft law acts may be genuine soft law in the relation between the EU and the Member States, but they are capable to induce binding legal effects on the national level when the national competent authority decides, within its discretion, to comply with them. Based on this analysis, the article also addresses issues related to the control and possible judicial review of ESA soft law. [less ▲]

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See detail(Re)créer l’histoire des femmes. La biofiction au service du genre
Barthelmebs-Raguin, Hélène UL

in Revue Critique de Fixxion Française Contemporaine (2021), 21

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See detailIntegrated likelihood based inference for nonlinear panel data models with unobserved effects
Schumann, Martin; Severini, Thomas A.; Tripathi, Gautam UL

in Journal of Econometrics (2021), 223

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See detailWhere were the repair ingredients for Defects4j bugs?
Yang, Deheng; Liu, Kui; Kim, Dongsun et al

in Empirical Software Engineering (2021), 26(6), 1--33

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See detailRadio Frequency Interference Detection Using Nonnegative Matrix Factorization
Silva, Felipe B.; Cetin, Ediz; Alves Martins, Wallace UL

in IEEE Transactions on Aerospace and Electronic Systems (2021)

This work proposes a new pre-correlation interference detection technique based on nonnegative matrix factorization (NMF) for global navigation satellite system (GNSS) signals. The proposed technique uses ... [more ▼]

This work proposes a new pre-correlation interference detection technique based on nonnegative matrix factorization (NMF) for global navigation satellite system (GNSS) signals. The proposed technique uses NMF to extract the time and frequency properties of the received signal from its spectrogram. The estimated spectral shape is then compared with the spectrogram’s time slices by means of a similarity function to detect the presence of radio frequency interference (RFI). In the presence of RFI, the NMF estimated spectral shape tends to be well-defined, resulting in high similarity levels. In contrast, in the absence of RFI, the received signal is solely comprised of noise and GNSS signals resulting in a noise like spectral shape estimate, leading to considerably reduced similarity levels. The proposal exploits this different similarity levels to detect the presence of interference. Simulation results indicate that the proposed technique yields increased detection capability with low false alarm rate even in low jammer-to-noise ratio environments for both narrow and wideband interference sources without requiring fine-tuning of parameters for specific RFI types. In addition, the proposal has reduced computational complexity, when compared with an existing statistical-based detector. [less ▲]

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See detailRosy or blue? Change in recall bias of students’ affective experiences during early adolescence
Zurbriggen, Carmen UL; Jendryczko, David; Nussbeck, Fridtjof W.

in Emotion (2021)

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See detailLocalization System for Lightweight Unmanned Aerial Vehicles in Inspection Tasks
Benjumea, Diego; Alcántara, Alfonso; Ramos, Agustin et al

in Sensors (2021), 21(17 5937),

This paper presents a localization system for Unmanned Aerial Vehicles (UAVs) especially designed to be used in infrastructure inspection, where the UAVs have to fly in challenging conditions, such as ... [more ▼]

This paper presents a localization system for Unmanned Aerial Vehicles (UAVs) especially designed to be used in infrastructure inspection, where the UAVs have to fly in challenging conditions, such as relatively high altitude (e.g., 15 m), eventually with poor or absent GNSS (Global Navigation Satellite System) signal reception, or the need for a BVLOS (Beyond Visual Line of Sight) operation in some periods. In addition, these infrastructure inspection applications impose the following requirements for the localization system: defect traceability, accuracy, reliability, and fault tolerance. Our system proposes a lightweight solution combining multiple stereo cameras with a robotic total station to comply with these requirements, providing full-state estimation (i.e., position, orientation, and linear and angular velocities) in a fixed and time-persistent reference frame. Moreover, the system can align and fuse all sensor measurements in real-time at high frequency. We have integrated this localization system in our aerial platform, and we have tested its performance for inspection in a real-world viaduct scenario, where the UAV has to operate with poor or absent GNSS signal at high altitude. [less ▲]

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See detailWhat You See is What it Means! Semantic Representation Learning of Code based on Visualization
Keller, Patrick UL; Kabore, Abdoul Kader UL; Plein, Laura et al

in ACM Transactions on Software Engineering and Methodology (2021)

Recent successes in training word embeddings for NLP tasks have encouraged a wave of research on representation learning for sourcecode, which builds on similar NLP methods. The overall objective is then ... [more ▼]

Recent successes in training word embeddings for NLP tasks have encouraged a wave of research on representation learning for sourcecode, which builds on similar NLP methods. The overall objective is then to produce code embeddings that capture the maximumof program semantics. State-of-the-art approaches invariably rely on a syntactic representation (i.e., raw lexical tokens, abstractsyntax trees, or intermediate representation tokens) to generate embeddings, which are criticized in the literature as non-robustor non-generalizable. In this work, we investigate a novel embedding approach based on the intuition that source code has visualpatterns of semantics. We further use these patterns to address the outstanding challenge of identifying semantic code clones. Wepropose theWySiWiM(“What You See Is What It Means”) approach where visual representations of source code are fed into powerfulpre-trained image classification neural networks from the field of computer vision to benefit from the practical advantages of transferlearning. We evaluate the proposed embedding approach on the task of vulnerable code prediction in source code and on two variationsof the task of semantic code clone identification: code clone detection (a binary classification problem), and code classification (amulti-classification problem). We show with experiments on the BigCloneBench (Java), Open Judge (C) that although simple, ourWySiWiMapproach performs as effectively as state of the art approaches such as ASTNN or TBCNN. We also showed with datafrom NVD and SARD thatWySiWiMrepresentation can be used to learn a vulnerable code detector with reasonable performance(accuracy∼90%). We further explore the influence of different steps in our approach, such as the choice of visual representations or theclassification algorithm, to eventually discuss the promises and limitations of this research direction. [less ▲]

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See detailAST-MTL : An Attention-based Multi- Task Learning Strategy for Traffic Forecasting
Buroni, Giovanni; Lebichot, Bertrand UL; Bontempi, Gianluca

in IEEE Access (2021)

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See detailIntraoperative discrimination of native meningioma and dura mater by Raman spectroscopy
Jelke, Finn; Mirizzi, Giulia; Borgmann, Felix Kleine et al

in Scientific Reports (2021)

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See detailThe Geostationary Ring: Practice and Law, Martha Mejia-Kaiser, Nijhoff/ Brill, Leiden 2020
Hofmann, Mahulena UL; Blount, Percy UL

in Air and Space Law (2021), 46(3), 475-478

The book is a comprehensive analysis of the international regime of the geostationary orbit.

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See detailInteroception in preschoolers: New insights into its assessment and relations to emotion regulation and stress
Opdensteinen, Kim D.; Schaan, Luca; Pohl, Anna et al

in Biological Psychology (2021), 165(1), 108166

Interoception may play an important role for emotion regulation and stress, thereby affecting mental health in children and adults. Yet, little is known on interoception in preschool children. Therefore ... [more ▼]

Interoception may play an important role for emotion regulation and stress, thereby affecting mental health in children and adults. Yet, little is known on interoception in preschool children. Therefore, we investigated interoceptive accuracy using the adapted Jumping Jack Paradigm (JJP) and its relationship with emotion regulation and stress. In Study I, 40 preschoolers completed the JJP and an emotion regulation task, demonstrating a positive relationship between interoceptive accuracy and emotion regulation at trend level (R² = 0.231, p = .023; β = .278, p = .073). In Study II, 31 preschoolers completed the adapted JJP before and after an acute laboratory stress test. Higher total cortisol output following acute stress induction were associated with reduced interoceptive accuracy (r = -0.670, p = .017). Extending earlier findings in adults and school-children, the relationship of interoceptive accuracy with emotion regulation and stress highlights the importance to investigate interoception in early childhood. [less ▲]

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See detailCOBREXA.jl: constraint-based reconstruction and exascale analysis
Kratochvil, Miroslav UL; Heirendt, Laurent UL; Wilken, St Elmo et al

in Bioinformatics (2021)

COBREXA.jl is a Julia package for scalable, high-performance constraint-based reconstruction and analysis of very large-scale biological models. Its primary purpose is to facilitate the integration of ... [more ▼]

COBREXA.jl is a Julia package for scalable, high-performance constraint-based reconstruction and analysis of very large-scale biological models. Its primary purpose is to facilitate the integration of modern high performance computing environments with the processing and analysis of large-scale metabolic models of challenging complexity. We report the architecture of the package, and demonstrate how the design promotes analysis scalability on several use-cases with multi-organism community models.https://doi.org/10.17881/ZKCR-BT30.Supplementary data are available at Bioinformatics online. [less ▲]

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See detailSpelling patterns of plural marking and learning trajectories in French taught as a foreign language
Weth, Constanze UL; Ugen, Sonja UL; Fayol, Michel et al

in Written Language and Literacy (2021), 24(1), 81-110

Although French plural spelling has been studied extensively, the complexity of factors affecting the learning of French plural spelling are not yet fully explained, namely on the level of adjectival and ... [more ▼]

Although French plural spelling has been studied extensively, the complexity of factors affecting the learning of French plural spelling are not yet fully explained, namely on the level of adjectival and verbal plural. This study investigates spelling profiles of French plural markers of 228 multilingual grade 5 pupils with French taught as a foreign language. Three analyses on the learner performances of plural spelling in nouns, verbs and pre- and postnominal attributive adjectives were conducted (1) to detect the pupils’ spelling profiles of plural marking on the basis of the performances in the pretest, (2) to test the profiles against two psycholinguistic theories, and (3) to evaluate the impact of the training on each spelling profile in the posttest. The first analysis confirms the existing literature that pupils’ learning of French plural is not random but ordered and emphasizes the role of the position for adjectives (pre- or postnominal) on correct plural spelling. The second analysis reveals the theoretical difficulties of predicting spelling of adjectival and verbal plural. The third analysis shows that strong and poor spellers both benefit from a morphosyntactic training and provides transparency and traceability of the learning trajectories. Together, the descriptive analyses reveal clear patterns of intra-individual spelling profiles. They point to a need for further research in those areas that have empirically provided the most inconsistent results to date and that are not supported by the theories: verbs and adjectives. [less ▲]

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See detailRole of the Industry in the Enforcement of the Tobacco Policy: Between Necessary Mistrust and Necessary Cooperation
Tosza, Stanislaw UL

in Utrecht Law Review (2021), 17(1), 5972

Tobacco products are heavily regulated because, in particular, of their acknowledged harmfulness to health, with highly elevated prices as one of the most important means of discouraging consumption. One ... [more ▼]

Tobacco products are heavily regulated because, in particular, of their acknowledged harmfulness to health, with highly elevated prices as one of the most important means of discouraging consumption. One of the most serious threats to the effectiveness of the tobacco policy comes from the trafficking of illicit tobacco, which is much cheaper, often of lower quality, and which reduces state and EU revenues. The achievement of tobacco policy objectives, in particular the combatting of illicit tobacco trade, depends on the participation of private actors, amongst which big industry plays a crucial role. Yet, the legal landscape of enforcement duties of the tobacco industry is a patchwork of instruments, unevenly affecting different players. In particular it includes controversial agreements between the major tobacco producers and the EU and Member States, to which three out of four major producers are subject. The agreement with the fourth – PMI – was not extended by the Commission in 2016. The decision as to the extension of the remaining agreements is looming. The objective of this article is to analyse the framework of duties of the tobacco industry in the enforcement of the tobacco policy, especially against illicit tobacco, and to reflect on whether the enforcement model, including the agreements with the tobacco producers, should be kept or abandoned. [less ▲]

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See detailInequality of educational opportunity at time of schooling predicts cognitive functioning in later adulthood
Leist, Anja UL; Bar-Haim, Eyal; Chauvel, Louis UL

in SSM - Population Health (2021), 15

Objectives. Our understanding of how societal conditions and educational policies influence cognitive development across the life course is improving. We tested the extent to which inequality of ... [more ▼]

Objectives. Our understanding of how societal conditions and educational policies influence cognitive development across the life course is improving. We tested the extent to which inequality of educational opportunity (IEO), the country- and cohort-specific correlation of parents' and their offspring's length of schooling, offers systematically different opportunities to contribute to cognitive development, which in turn influences cognitive abilities up to older ages. Methods. A total of 46,972 individuals of three cohorts born 1940–63 from 16 European countries and Israel provided up to six cognitive assessments and information on covariates in the SHARE survey 2004–2017. Individual-level data were linked to indicators of IEO at time of schooling, and economic, health, and human development, provided by World Bank, WHO, and the UN. Results. In multilevel (mixed-effects) models with random individual and country-cohort effects and adjusted for a large set of confounders, higher IEO was associated with lower levels of cognitive functioning in men and women. Interaction analyses suggested lower cognitive levels particularly of women who were schooled in higher IEO contexts and had lower educational attainment. Associations with rate of change in cognitive functioning were present only in women, however there was little clinically relevant cognitive decline across the window of observation. Result patterns were mostly consistent after including additional contextual indicators, and in a subsample with childhood information. Discussion. Findings suggest that IEO is able to substantially influence cognitive development with long-lasting impacts. Lower-educated women of the cohorts under investigation may have been particularly vulnerable to high-inequality educational contexts. [less ▲]

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See detailSNR-Based GNSS-R for Coastal Sea-Level Altimetry
Tabibi, Sajad UL; Sauveur, Renaldo UL; Guerrier, Kelly et al

in Geosciences (2021), 11(9 391),

Geodetic Global Navigation Satellite System reflectometry (GNSS-R) uses ground-based signals of opportunity to retrieve sea levels at an intermediate spatial scale. Geodetic GNSS-R is based on the ... [more ▼]

Geodetic Global Navigation Satellite System reflectometry (GNSS-R) uses ground-based signals of opportunity to retrieve sea levels at an intermediate spatial scale. Geodetic GNSS-R is based on the simultaneous reception of Line-of-Sight (LoS) and its coherent GNSS sea surface reflection (non-LOS) signals. The scope of this paper is to present geodetic GNSS-R applied to sea level altimetry. Signal-to-Noise Ratio (SNR) measurements from a Commercial Off-The-Shelf (COTS) geodetic-quality GNSS station at the Haiti Coast Guard Base in Port-au-Prince is used to retrieve sea levels in the International Terrestrial Reference Frame 2014 (ITRF2014). The GNSS-R sea levels are compared with those of the OTT Radar Level Sensor (RLS) installed vertically below the GNSS antenna. The Root-Mean-Square Error (RMSE) between the geodetic GNSS-R sea levels and OTT RLS records is 3.43 cm, with a correlation of 0.96. In addition, the complex differences between the OTT RLS records and 15-min GNSS-R sea levels using Global Positioning System (GPS) and Globalnaya Navigazionnaya Sputnikovaya Sistema (or Global Navigation Satellite System; GLONASS) signals for all the eight major tidal constituents are in mm-level agreement. Therefore, geodetic GNSS-R can be used as a complementary approach to the conventional method for sea level studies in a stable terrestrial reference frame. [less ▲]

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See detailLa neutralité algorithmique à l’épreuve de ses effets discriminatoires
Ratti, Luca UL

in Revue de Droit du Travail (2021)

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See detailUsing social marketing for the promotion of cognitive health: a scoping review protocol
Barbier, Mathilde UL; Schulte, Caroline; Kornadt, Anna Elena UL et al

in BMJ Open (2021)

Introduction: The use of social marketing strategies to induce the promotion of cognitive health has received little attention in research. The objective of this scoping review is twofold: (i) to identify ... [more ▼]

Introduction: The use of social marketing strategies to induce the promotion of cognitive health has received little attention in research. The objective of this scoping review is twofold: (i) to identify the social marketing strategies that have been used in recent years to initiate and maintain health-promoting behaviour; (ii) to advance research in this area to inform policy and practice on how to best make use of these strategies to promote cognitive health. Methods and analysis: We will use the five-stage methodological framework of Arksey and O’Malley. Articles in English published since 2010 will be searched in electronic databases (the Cochrane Library, DoPHER, the International Bibliography of the Social Sciences, PsycInfo, PubMed, ScienceDirect, Scopus). Quantitative and qualitative study designs as well as reviews will be considered. We will include those articles that report the design, implementation, outcomes and evaluation of programmes and interventions concerning social marketing and/or health promotion and/or promotion of cognitive health. Grey literature will not be searched. Two independent reviewers will assess in detail the abstracts and full text of selected citations against the inclusion criteria. A Preferred Reporting Items for Systematic Reviews and Meta-Analyses flowchart for Scoping Reviews will be used to illustrate the process of article selection. We will use a data extraction form, present the results through narrative synthesis and discuss them in relation to the scoping review research questions. Ethics and dissemination: Ethics approval is not required for conducting this scoping review. The results of the review will be the first step to advance a conceptual framework, which contributes to the development of interventions targeting the promotion of cognitive health. The results will be published in a peer-reviewed scientific journal. They will also be disseminated to key stakeholders in the field of the promotion of cognitive health. [less ▲]

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See detail1918, 1945, 1989: Childhood in Times of Political Transformation: Part I
Kind-Kovács, Friederike; Venken, Machteld UL

in Journal of Modern European History (2021), 19(2),

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See detailThe Mask of Evil : Moriarty, Fu-Manchu, Mabuse
Kohns, Oliver UL

in Cultural Express (2021), 6

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See detailDyPS: Dynamic, Private and Secure GWAS
Pascoal, Túlio UL; Decouchant, Jérémie UL; Boutet, Antoine et al

in Proceedings on Privacy Enhancing Technologies (2021)

Genome-Wide Association Studies (GWAS) identify the genomic variations that are statistically associated with a particular phenotype (e.g., a disease). The confidence in GWAS results increases with the ... [more ▼]

Genome-Wide Association Studies (GWAS) identify the genomic variations that are statistically associated with a particular phenotype (e.g., a disease). The confidence in GWAS results increases with the number of genomes analyzed, which encourages federated computations where biocenters would periodically share the genomes they have sequenced. However, for economical and legal reasons, this collaboration will only happen if biocenters cannot learn each others’ data. In addition, GWAS releases should not jeopardize the privacy of the individuals whose genomes are used. We introduce DyPS, a novel framework to conduct dynamic privacy-preserving federated GWAS. DyPS leverages a Trusted Execution Environment to secure dynamic GWAS computations. Moreover, DyPS uses a scaling mechanism to speed up the releases of GWAS results according to the evolving number of genomes used in the study, even if individuals retract their participation consent. Lastly, DyPS also tolerates up to all-but-one colluding biocenters without privacy leaks. We implemented and extensively evaluated DyPS through several scenarios involving more than 6 million simulated genomes and up to 35,000 real genomes. Our evaluation shows that DyPS updates test statistics with a reasonable additional request processing delay (11% longer) compared to an approach that would update them with minimal delay but would lead to 8% of the genomes not being protected. In addition, DyPS can result in the same amount of aggregate statistics as a static release (i.e., at the end of the study), but can produce up to 2.6 times more statistics information during earlier dynamic releases. Besides, we show that DyPS can support a larger number of genomes and SNP positions without any significant performance penalty. [less ▲]

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